Glass transfer mechanism



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GLASS TRANSFER MECHANISXQI I original Filed NBV. 29, 1927 1osheets-sheet l@ INVENTOR. l-Www@ ATTORNEYS.

Patented Sept. i2, i933 geraniraranr pagina Lerenti epass 'raansrnn'Meenemen No. 236,524. Divided and this application april 2S, i930.Serial No. ii'ld 29 mailers.

The invention relates to a transfer mecl'ianisml for removing glasswarefrom a conveyer, such as the conveyer of a nre-finisher. -Tne numerousnovel featureswill appear from the detailed description, and will bedefined by the appended claims.

This application isa division of my application Serial No. 236,524,filed November 29, 1927.

'Referring to the drawings:

Figure 1 is a plan view of the transfer device; parts being shown insection.-

Figure 2 is a side `view of the transfer parts being shown in section.

Figure 3 is a more or less diagrammatic View illustrating the operationof the various valves and cylinders.

Figure 3a is a view similar to Figure 3, but showing a slightly modifiedform of control for the cylinder which raises and lowers the transfermechanism.

Figure 4 is a vertical sectional view taken on line @-4 of Figure 1; andillustrating in dotted lines the position of the transfer mechanism atthe delivery end of its stroke.

Figure 5 is a vertical sectional view taken on line 5-5 of Figure 1.

Figure 6 is a vertical sectional view taken on line 6 6 of Figure 5.

Figure 7 is a vertical sectional view taken on line 7-7 of Figure 5.

Figure 8 is a detail perspectivaview of one of the oscillatable gripperarms.

Figure 9 is an enlarged longitudinal sectional View of the cylinderwhich moves the transfer mechanism bodily back and forth between pickupand deliver position, and the valves associated with the cylinder; thecylinder being broken away.

Figure 9a is a vertical sectional view taken on line 9ct- 9a of Figure9.

Figure 10 is a detail plan View of the cams which control the operationof the transfer mechanism, and illustrating the preferred method ofmounting the cams.

Figure 10a is a. detail front elevational view of such. cams, andillustrating the preferred method. of adjusting the cams. f

Figure 1l is a side elevational view of thel delivery end of themachine, illustrating the means for operating the valves for thetransfer mechanism, the continuously rotating disc for receiving thetransferred ware, and illustrating d'agrarnmatically severalpcsitionsthe transfer device;

and mechanism assumes in transferring the! ware, inverting it, anddepositing it on the rotating Figure 12 is a vertical sectional view ofthe rotating disc and the means cy which it is sup-v ported and driven;and

Figure 13 is a plan view of the transfer mechanism, the disc, and theconveyer with which the disc cooperates, and which leads to a leer (notshown), or to any desired point.

In this transfer mechanism, which is now to be described, two tumblers,or other articles, are simultaneously gripped, inverted, landtransferred. By thus transferring two articles at a time, the number ofoperations per minute relquired to transfer a given number of articles,is

reduced by half; or conversely, by operating this transfer mechanism atthe speed required of transfer devices previously known, it willtransfer twice the number of articles in a given time While themechanism is particularly adapted for simultaneously handling twoarticles. it .will be apparent that it 'may just as readily be employedfor transferring a single article at a time; and with slight changes itmay be employed for simultaneously transferring three, four, or more,articles. Also the mechanism is adapted to invert the ware during itstransfer movement; but, as will appear hereinafter, by a very simpleadjustment, the step of inverting the ware may be omitted.

Numeral 410 indicates a cylinder for bodily raising and lowering thetransfer mechanism; the cylinder being preferably mounted on one of theI-beams of the main frame of the refinisher. The cylinder is providedwith the usual piston 411 and upwardly extending piston rod 412. Securedto, or integral with the upper end of the piston rod, is a squared rod413, which is guided for vertical sliding movement, in a guide l14 whichis fixed to the upper ends of two columns 415, which are supported byand extend upwardly from, brackets 416 on the cylinder 410. The guide414 is suitably braced by a tie rod 414 having its ends secured to theguide and to the frame of the machine. The cylinder 410 is preferablyprovided with a crod or screw 417 threaded through the lower cylinderhead and projecting upwardly into the cylinder to thereby adjustablylimit the downward movement of the transfer mechanism. Obviously, anyother suitable means may be employed for vertically adn justing thelower position of the transfer mechanism. a

Suitably mounted on the upper end of the squared rod 413, is ahorizontal cylinder 4218,

` between the pick-up and delivery points.

which isadapted to move the transfer mechanism bodily back and forthbetween the pickup and delivery points. Extending longitudinally of thecylinder 418, on the upper side thereof, is a dovetail track or guideway419, and slidably mounted for reciprocating movement on this track orguideway is a casting 420 which carries a cylinder for moving thegrippers toward and from the ware conveyer, valve mechanism, means forinverting the grippers, etc. As stated above, the function of cylinder418 is to move the transfer mechanism bodily back and' forth Of course,various means may be employed for operatively connecting the cylinder418 and the casting 420 which carries the transfer mechanism, but thepreferred means, which I now employ, comprises a piston 421 and pistonrod 422 operated by the cylinder 418; the end of the piston rod beingtied to a rod 423 which has its opposite end fixed to the casting 420.

Before proceeding further, I shall describe the particular mechanismdisclosed herein for controlling the operation of the cylinders 410 and418. It will be seen that three cams, indicated by numerals 424, 425 and426, are carried by the main drive shaft 153 of the fire-finisherconveyer; the cams being adjustable by any desired means, such as slots427 and bolts 428, and each cam being provided with eight lobes, in thepresent construction. There are sixteen teeth on the driving sprocket of.the machine, and the cups 186 which carry the ware through thefire-finisher, are spaced in accordance with the spacing of the teeth onthe driving sprocket,

- and inasmuch as the transfer mechanism picks up two articles at eachoperation it will be apparent that there need be only halfv the numberof cam lobes as there are teeth, accordingly each cam is providedWitheight lobes. The preferred means for adjusting these cams will bedescribed hereinafter. Numeral 429 indicates a bracket upon which arepivotally mounted three arms 430; these arms project substantiallyhorizontally beneath the cams, and a roller 431 mounted on the free endof each arm is always in contact with its cam surface; it beingunderstood that there is one of these arms for each cam. Beneath thearms are three valve casings 432, 433, and 434, which are respectivelyassociated with the cams 424, 425 and 426. Slidably mounted in the valvecasings 432, 433 and 434, are valves' 432', 433 and 434', respectively,normally forced upwardly by springs 432", 433" and 434", and-havingvalve stems 432'", 433'", and 434'", respectively which engage the arms430, and thus press the rollers 431 upwardly against their respectivecams. As each lobe of each cam engages its roller, its arm will beforced downwardly, thereby depressing its particular valve, against thepressure of the spring. In Figure 3, which is more or less diagrammatic,the cams are shown as directly engaging the valve stems.

Numeral 435 indicates the air line for operating the various cylinders,and leading from this line are branch lines 436, 43'? and 438,communicating respectively with the upper end of the valve casings 4 32,433 and 434. Exhaust ports 439, 440 and 441 are provided in the valvecasings 432, 433 and 434, respectively; and the valves 432', 433' and434' are so constructed that in their normal upper position they willshut off communication with the live air lines and open communicationwith the atmosphere through the exhaust ports 439, 440 and 441; and

when the valves are depressed by the cams, communication will be openedwith the live air lines and the exhaust ports will be shut off. Acomplete cycle of operation of the various valves will be describedhereinafter, but the manner' of operating the cylinders 410 and 418 maybe described at this point; reference being khad particularly to Figure3. It will be noted by an inspection of Figure 3, that the cam 424 hasdepressed valve stem 432'", thereby admitting fluid pressure throughpipe 442 to the lower end of the cylinder 410. The piston 411 will thusbe moved upwardly, to bodily elevate the transfer mechanism. It will beunderstood, of course, that before the occurrence of this step in thecycle of operation, the grippers have a1- ready been projected intocooperative position with respect to the ware to be transferred, andhave been closed to grip the ware. 'I'he upper end of cylinder 410 hasan exhaust port 443, which is preferably provided with an adjustableneedle valve 443' t regulate the exhaust and thus provide a cushioningeffect for the upward stroke of the piston 411. Just as the piston 411is about to complete its upward movement it uncovers a port 444, whichpermits the fluid pressure beneath the piston to flow through a flexiblepipe 445 to the right hand end (Fig. 3)

of cylinder 418. This admission of fluid pressure will cause the piston421 to move to the left (Fig. 3) to thereby bodily move the transfermechanism from the pick-up position to the point of delivery of thetransferred ware. During this stroke of the piston 421, the left handend of'the cylinder 418 is exhausting through the flexible pipe 446,valve 433' and valve casing exhaust port 440, to atmosphere. Just as thepiston reaches the end of this stroke, cam 424 will release the valve432', so that it will be moved upwardly by the spring 432, to open thelower end of cylinder 410 to the atmosphere through pipe 442, valve 432'and valve casing vexhaust port 439. The piston '411 and the transfermechanism carried thereby, thus move downwardly by gravity to theirlowered position; this position being regulated by the threaded rod orscrew 417. While the transfer mechanism is at the delivery position thegrippers will be opened to release the ware, and will be withdrawn outof alignment with the ware carrying cups; as will be describedhereinafter. After such operations have been performed, cam 425 willdepress valve stem 433'", thereby admitting fluid pressure through theflexible pipe 446 to the left hand end (Fig. 3) of the cylinder 418, tomove the piston 421 and the transfer mechanism back to the pick-upposition. During this stroke the right hand end of the cylinder 418 willexhaust through pipe 445, cylinder 410, and exhaust port 443. The lines436 and 43'7, leading to the valve casings 43-2 and 433 respectively,are preferably provided with valves 448 and 449 respectively, to controlthe volume of fluid to the cylinders. As `a safety device, to raise thetransfer mechanism in any emergency, and to maintain it in raisedposition as long as desired, I provide a pipe 435a leading from the mainair line 435t'o the lower end of the cylinder 410; and place in the pipe435a a' valve'435b which may be operated by a connecting rod 435eleading to the forward end of the machine and connected with a handlever (not shown). This mechanism is shown more or less diagrammaticallyin Figures 3 and 3a, and in both of these meedoet By opening this valve,air pressure will be ading and closing the grippers, the means forinverting the ware during its transfer, the means for renderinginoperative the inverting means, etc. L

The casting 420, which is moved back and forth on the dovetail track orguide way 419, is centrally bored to receive a cylinder or sleeve 450;this sleeve or cylinder being rotatable as will appear hereinafter.Numeral 451 indicates the piston mounted in this cylinder 450, and itspiston rod 452 extends through the usual stuiing box gland 453 and hasfixed to its end a transversely extending crosshead 454 which carriesthe grippers. This crosshead travels back and forth on guide brackets455-455. These ,guide brackets are integral with or attached to.

an annular plate 456 which is concentric with and slightly spaced fromthe stuihng box gland 453, and which is attached to a flange 457 oi thecylinder 450, by means of bolts 458. Thus when the cylinder 450 isrotated, the bracket guides 455, the crosshead 454, and the mecha nisrn,carried thereby` will also be rotated. ittached to the opposite end ofthe piston 451. is a rod 459 which extends rearwardly through a sleeve460 threaded into the rear cylinder head 461. The rod projects beyondthe sleeve, and has nuts 462 mounted on its threaded'end portion. Thusby the adjustment of the nuts 462, the forward lim'it of the pistonstroke may be adjusted, thereby adjusting the forward position of thegrippers. I

Referring' now particularly to Figures 3, 4 and 5, it will be seen thata pipe 463, having a valve 463', leads from the main air line 435 to thevalve casing 464, which is integral with or attached to the casting 420.Formed in this valve casing 464, and communicating with the pipe 463, isa horizontal passage 465 extending toward opposite ends of the valvecasing, and extending downwardly from the opposite ends of thehorizontal passage are vertical passages 466 and 467, which communicateat their lower ends with a horizontally extending valve chamber 468.Mounted for reciprocation in this valve chamber is a shuttle valve 469,which is so constructed that as it is moved back and forth it willalternately admit compressed air or other duid pressure to one end ofthe cylinder 450. and at the same time permit the opposite end of thecylinder to exhaust to the atmosphere through the passage 470. Thisexhaust passage is preferably provided with an adjustable needlevalve471, whereby a cushioning eect may be provided at the ends of the strokeof the piston 451, thus giving a smoother operation.

The ends of the shuttle valve 469 are indicated by numerals 472 and473,'and it will 5be noted that they are of such length as to project,through suitable stuiiing boxes, beyond the ends of the shuttle valvecasing 464. A frame 474 is slidably mounted on the columns 415, and theupwardly extending arms of this frame are seI cured to the ends of thetrack 419; and mounted in the upper ends of these arms are cylinders 475and 476 which shift the position of the shuttle valve. The frame 474reinforces the structure as well as provides a support for the cylinders475 and 476. Cylinder 475 is provided with a piston rod 475e inalignment with shuttle valve stem 472; and a spring 475D for normallymaintaining the piston rod in retracted position. For projecting thepiston rod forward into engagement with the shuttle valve stem 472, Iprovide a pipe 475e which leads from pipe 442 to the end ci cylinder475; the pipe 475e being preferably provided with a valve 4750i toreduce the air pressure in cylinder 475. Likewise the cylinder 476 isprovided with a piston rod 476e in alignment with shuttle valve stem473; and a spring 476b for normally maintaining the piston rod inretracted position. For projecting the piston rod forward intoengagement with the shuttle valve stem 473, l provide a pipe 476C whichleads :from valve casing 434 to the end of cylinder 476. The cylinders475 and 476 are also preferably provided with drain cocks 477.

When cam 424 trips valve 432', air pressure will pass through pipe 442to the lower end of cylinder 410, to elevate the transfer mechanism; andair pressure simultaneously passes through pipe 475e to the end cicylinder 475. The piston rod 475e will thus be projected forward into engagement with the shuttle valve stem 472, thereu by shifting the shuttlevalve to position to admit the air pressure from pipe 463 to the rearend of cylinder 450 to project the .grippers forwardto grip the ware. Ofcourse, the ware must be gripped before the piston 411 of cylloi).

inder 4l@ .elevates the transfer mechanism; and

this mode oi operation is accomplished by reason of the tact thatcylinder 475 is much smaller in diameter than cylinder 410- and has toexert practically no force while cylinder 410 must lift the entireweight of the transfer mechanism. So that piston 475erl will shift theshuttle valve to admit air pressure to the rear end oi cylinder 450 toerect the closing of the grippers, an instant before 'the transfermechanism is elevated by cylinder 416. The piston 475e is returned toits normal position by spring 4751i as 'soon as valve 432' After thetransfer mechanism has moved to its delivery position, and has beenlowered by releasing the air in cylinder 416, the piston, 476a will beshot'forward by the operation of valve 434' to admit air pressure frompipe 438 to pipe 476e and thence to the end of cylinder 476; the volumeof air being controlled by valve 438' in pipe 436. The shuttle valvewill thus be shifted to permit the air pressure from pipe 463 to enterthe forward. end of cylinder 450, thereby causing the grippers to beopened and retracted, to release the ware.

is returned to exhaust position.'

Immediately thereafter,

cam 425 will operate valve 433 to admit uid pressure to the left handend (Fig. 3) of the cylinder 416, to inove the transfer mechanism fromdelivery position to pick-up position.

The casting 426 is provided with a passage 476 which leads from theinterior of the shuttle valve casing to a point adjacent the rear end oithe cylinder or sleeve 450. The rear portion of this cylinder or sleevehas a fluid inlet passage 479 which aligns with the passage 478, whenthe 'cylinder is in the position illustrated in Figure 5, to admit duidpressure to the rear end of the tion to grip the ware. As will appearhereinafter, the cylinder is rotated through 180 to invert the warewhile it is being transferred, and in order that the piston may bemaintained in its forward position during the rotation of the cylinder,I have provided the wall of the cylinder with a groove 480 whichcommunicates at one end with the passage 479, and which extends almost180 about the cylinder. 'I'hus there will4 be full pressure behind thepiston 451 during almost the complete period of inverting the ware.Diametrically opposed to the inlet passage 479 is an exhaust passage481, so that when the cylinder has been rotated through 180 to invertthe ware, the pressure behind the piston will be relieved throughpassages 481, 478 and 470; it being understood that at the instant thecylinder has rotated 180 to invert the ware, the shuttle valve isshifted, by the operation ofcylinder 476, to exhaust the rear end ofcylinder 450 and to admit fluid pressure to the front end of thecylinder to open the grippers and move them to position out of the pathof the oncoming ware.

The forward end of cylinder 450 is provided with an exhaust passage 482.During the quick forward movement of the piston 451 this passagecommunicates with a passage 483 in the casting 420, leading to theinterior of the shuttle valve casing. In Figure 5, the piston 451 ismaking its forward stroke to grip the ware, and consequently thisexhaust passage 482 is shown in communication with the passage 483. Theforward end of the cylinder 450 is also provided with an inlet passage484 which comes into alignment with the passage 483 just as the cylinder450 completes its rotation of 180 to invert the ware; and fluid pressureis admitted to the forward end of the cylinder, by the operation ofvalve 434', to open the grippers and move them out of the path of theoncoming ware, as soon as the transfer mechanism has settled by gravityto its lowered position. At this moment the transfer mechanism willstart its travel in the opposite direction, and the cylinder 450 willstart its rotation of 180 .in the opposite direction. During thisreverse rotation it is desirable to maintain full pressure infront ofthe piston 451, and for this purpose I have provided a groove 485 whichcommunicates at one end with the passage 484, and which extends almost180 around the outer wall of the cylinder 450. The means for rotatingthe cylinder back and forth, and the means for rendering such meansinoperative, will now be described; reference being had particularly toFigures l, 2, 4, 5 and 11. Mounted on the annular flange 457 of thesleeve or cylinder 450 between the casting 420 and the annular plate456, is a large gear wheel 486. This gear wheel is normally attached tothe annular plate 456 by means of a bolt 487 which passes through thisplate and is threaded in the opening 488 provided in this gear wheel;or, of

course, any other appropriate means may be ernployed for normallyattaching the gear wheel to the plate. As the gear wheel is normallyattached to the plate 456, and as the plate is attached, by means ofbolts 458, to the annular flange 457 of the cylinder 450, it is obviousthat any rotation of the gear wheel will impart a similar rotation tothecylinder; and as the grippers are mounted on the brackets 455, which arecarried by the plate 456, it is also obvious that any rotation of thegear wheel will impart a similar rotation to the brackets and thegripper mechanism mounted thereon. A rack 489 is suitably mounted onbrackets 490 which are attached to or integral with the cylinder casing418.

This rack 489 extends the full distance between the pick-up position andthe delivery position, and is arranged beneath the gear wheel 486 and inengagement therewith; so that as the casting 420 travels back and forthbetween the pick-up position and the delivery position, the gear wheelwill be rotated in opposite directions, thereby similarly rotating thegrippers and the cylinder 450. Of course, the gear wheel 486 is sodesigned that it will make exactly a half rotation during the travel ofthe casting 420 in each direction. 'Ihus 'when the casting travelsfrompick-up position to delivery position, the gear 486, and the partsassociated therewith, will rotate through 180 to invert the ware; andwhen the casting 420 travels in the opposite direction, from deliveryposition to pick-up position, the gear 486 and the parts associatedtherewith will be rotated 180 in the opposite direction, to return thegrippers to their normal position for gripping ware. In many instancesit is not necessary to invert the ware, and one of the features of themechanism resides in the provision of means whereby the device can bereadily changed from an inverting to a noninverting transfer, and viceversa. As described above, the bolt 487 normally secures the gear wheelto theannular plate 456 which carries the transfer guide brackets 455and which is secured to the flange 457 of the cylinder 450. By merelyremoving the bolt 487, the gear wheel 486 is disconnected from the plate456, and is thus lrendered entirely inoperative; so that when thecasting 420 is moved back and forth between the pick-up and deliverypositions, the gear wheel will rotate as before, by reason of itsengagement with the rack 489, but it will merely rotate freely withouthaving any effect on the grippers or on the cylinder 450. To avoid anypossible rotation of the cylinder and grippers after the gear wheel hasbeen disconnected, I provide a set screw 491 which is adapted to engagein a groove 492 in the wall of the cylinder 456'. rFnus to eliminate theinverting feature it is only necessary to remove the bolt 487 and set upon the screw 491; 4and when it is again desired to invert the wareduring transfer it is only necessary to insert the bolt 487 and withdrawthe set screw 491.

The grippers, the means for opening and closing the grippers, and themeans for adjusting the grippers for ware of different sizes, will nowbe described, reference being had particularly to Figures 1, 2, 5., 6and 8. As described hereinbefore, the piston rod 452 carries a crosshead454 which rides on the guide brackets 455. Mounted in upstandingbrackets 493 on the top of the crosshead, is a shaft 494; and slidablymounted on this shaft are two forwardly extending parallel arms 495.Detachably mounted. on the free ends of the arms 495 are gripperelements 496; the gripper elements being oppositely disposed, tocooperate with the two articles to be transferred. The gripper eleements are preferably pinned to the ends of the arms 495, and theconnection is somewhat loose to give the gripper elements 496 a slightlatitude of movement to adjust themselves to the articles beingtransferred. The arms 495 are rigid, and as clearlyshown in Figure 1,these arms project between the two articles to be transferred. Thesearms are simultaneously renacer moved toward or from each other, toadjust them for different sizes of ware, by meansr of a rod 497 whichhas its end portions oppositely threaded in these arms 495. A knurledhead 498 is provided for the purpose of rotating the oppositely threadedrod 497, to thereby simultaneously move the arms toward or from eachother. It will be understood when these arms are adjusted they ride onthe shaft 494. so that it is a true translation movement, whereby thecenters of the gripper elements travel along the center line of the pathof the ware. Thus in the adjustment of these gripper elements for largeror smaller ware, there is no possibility of the gripper elements beingmoved out of proper gripping relation with the ware to be transferred.Associated with each of the rigid gripper arms 495 is an oscillatablegripper arm 499, and as the construction of the two oscillatablegrippers is identical, it will be sufficient to describe theconstruction of one of them. The oscillatable arms '499 are pivotallymounted on the ends of the brackets 455 by means of hinge pins 500. Byreference to Figures 2 and 8, it will be seen that the oscillatable armis formed of two vertically spaced sections, and mounted in the spacebetween the sections is a triangular shaped member 501. Pinned to theforward end of this triangular member is the gripper element 502, and itmay be` mentioned that the gripper member is loosely mounted -to provideadequate freedom of movement to permit the gripper member to accommodateitself to the ware being gripped. A rod 503 is pivotally attached to onecorner of the triangular member 501, and the rod extends rearwardlythrough a collar 504 pivotally mounted adjacent the end of the crosshead454.- An adjusting nut 505 is threaded on the rear end of the rod andabuts against the collar, and a spring 506 is mounted on the rod andheld under compression between the collar and the point of attachment ofthe rod to the triangular member 501. Thus the spring will tend to forcethe gripper to closed position, the extent of closing and opening beingregulated by the nut 505. When the crosshead 454 is moved rearwardly,the collar 504 abutting vagainst the nut 505 will swing the gripper toopen position; and when the crosshead moves forwardly, the pressure ofthe spring 506 .will force the gripper into closed position, but anyundue pressure on the ware will be relieved bythe spring.

It is desirable that the grippers carried by the rigid arms l95 shouldbe diametrically opposed to the grippers carried by the oscillatvablearms 499, when these parts are in gripping relation, irrespective of thediameter of the ware being handled. It is apparent that if the rigidarms be moved to accommodate either larger or smaller ware, the gripperelements carried by the rigid arms will retain their same relation tothe ware, for the grippers will have been moved in a right line, whichright line is the center line of the path of movement of the oncomingware. But in accordance with the mechanism thus far described it isapparent that in adjusting the gripper 502 for larger or smaller ware,the gripper will travel in the arc of a circle about the hinge pin 500as a center, and thus the `gripper 502 would not be diametricallyopposed to the gripper 496, when ingripping position. In order that thegripper 502 may retain its proper relation to the ware, when adjustedfor larger or smaller ware, I

have provided means for retaining this gripper, when in grippingposition, in the center line of the path of the ware. It is for thisreason that I have provided the triangular shaped member 501, which wasreferred to above, and the function of which will now be described;reference being had particularly to Figure .8. Adjacent the ends of thetop and bottom sections of the pivotally mounted arm 499 arelongitudinally extending slots 507, and about midway oi the length ofthe -top and bottom sections of this arm are diagonal slots 508. Thetriangular member 501 is provided with pins 509 and 510 which ride inthe slots 507 and 508 respectively. A rod 511 is pivotally mounted onthe pin 509,

and extends rearwardly through a suitable opening 512 in the head of thehinge pin 500.

.Threaded on the outer end of the rod 511, and

abutting against the head oi the hinge pin 500, is an adjusting nut 513;and a coil spring 514 is mounted on the rod 511 and isy held undercompression between the head 500 of the hinge pin and the point wherethe rod is pivotally attached to the pin 509 on the triangular member.Suppose now, that the gripper elements 502 are to be adjusted to handlelarger ware. By setting up on the nut 505 the gripper element 502 willbe moved outwardly in the arc of a circle, of which the hinge pin 500 isthe center. This adjustment causes the gripper to close to the extentdesired to grip the larger ware, but the gripper will not bediametrically opposed to the gripper 496 on the rigid 'arm 495. Toadjust the gripper 502 into its proper relation with the gripper 496, itis only necessary to unscrew the nut v513 to the desired extent,whereupon the spring 514 will force outwardly the triangular shapedmember which carries the gripper 502. This outward movement of thetriangular shaped member is guided by the slots 507 and 508. The slot507 will permit the gripper member to move outwardly into the centerline of the path of the ware, but this movement alone would not besufficient for the gripper member 502 would still be inclined somewhat,due to its arcuate adjustment about the pivot 500. This is taken care ofby the slot 508, for itwill be apparent that as the gripper-elementmoves outwardly guided by the slot 507, it will also be swung slightlyabout the pin 509 as a pivot, due to the movement of the pin 510 in thediagonal slot 508. Thus the gripper element 502 will have been so movedthat it will bear exactly the same relation to the gripper element 496that it did before the adjustment was made for larger (or smaller) ware,except, of course, the distance betweenthe grippers 496 and. 502 will begreater (or smaller). g In the operation of the grippers, it will beunderstood that when fluid pressure is admitted to the rear end of thecylinder 450, the whole4 gripper mechanism will be moved forwardly. Thisforward movement will project the two gripper elements 496 between thetwo articles to be gripped; and this forward movement will also swingthe gripper elements 502 about their pivots 500, into cooperativegripping relation with the gripping elements 496, whereby the twoarticles will be simultaneously gripped, preparatory to beingtransferred. After the ware has been carried to the point of delivery,and the transfer mechanism has settled by gravity to its loweredposition, iiuid pressure is admitted to the forward end of the cylinder450,' thereby moving the crosshead L54 rearwardly to open the grippers502 to release the transferred ware; and, of course, the continuedrearward movement of the crosshead carries the complete grippermechanism out of the path of the oncoming ware, preparatory to thebodily movement of the cylinder 450 and associated parts, back to thepick-up position.

I have described hereinbefore how the entire mechanism is moved bodilyback and forth between pick-up and delivery position, by means of thepiston 421 of the cylinder 418; and I shall now describe the meansemployed for cushioning the strokes of the piston 421, reference beinghad particularly to Figures 1 to 5, 9 and 9a. A passage 515 leads fromthe right hand end of the cylinder 418 to a small valve cylinder 516,and communicating with this valve cylinder is the pipe 445 which conveysthe lluid under pressure to'this end of the cylinder, and

which also conveys the exhaust fluid from this end of the cylinder.Mounted in this valve cylinder is a valve 517 which is normally pressedto the left (Figs. 3, 4 and 9) by means of a spring 518, to maintainfree communication be.

tween pipe 445 and passage 515. This valve 517 is provided with a stem519 which projects through the closed end of the valve cylinder. Apassage 520 leads from the left hand end of the cylinder 418 to a smallvalve cylinder 521, and communicating with this valve cylinder is thepipe 446 which conveys the fluid under pressure to this end of thecylinder. Mounted in this valve cylinder 521 is a valve 522 which isnormally pressed to the right (Figs.'3, 4 and 9) by means of a spring523, to maintain free communication betweenpipe 446 and passage 520.This valve is provided with a stem 524 which projects through the closedend of the valve cylinder.

The valves 517 and 522,and associated parts, are identical inconstruction, and therefore the description of one of them will besuillcient. 'I'he vconstruction of these valves is best shown in Fig. 9,and in this figure the valve 517 is shown.

in its normal position, lWhile valve 522 is shown in one of thepositions it occupies while producing the cushioning effect. Asillustrated in this Figure 9, the valves are hollow and are open' at theends facing the air pipes 445 and 446, and are closed at the oppositeends and merge into the valve stem which project through the ends of thevalve cylinders. The outer wall of each of the valves 517 and 522 is'4provided with circumferential grooves 525 and 526; the grooves beingarranged adjacent the ends of the valves; and the circumferential groove526 is provided with one or more passages 527, to provide communicationbetween the groove and the interior of the valve. The outer wall of eachalternately engage the valve stems 519 and 524.

For the purpose of normally maintaining the arm 530 in alignment withthe valve stems, the upper end of the arm is provided with a laterallyextending finger 532 on which is mounted a counterweight 533, and thelower end of the arm is provided with a flnger 534 which extendslaterally in the opposite direction to finger 532, and carries a roller535. This roller engages a flange or track 536 which projects from thecylinder casing 418 and which extends in a horizontal plane nearly thelfull length of the cylinder. But adjacent the ends of the cylinder theflange or track is turned downwardly, as indicated by numeral 537 (Fig.4). The counterweight 533 maintains the roller 535 in contact with thehorizontal track or flange 536, and thus the lugA 531 is maintained inalignment with the valve stems 519 and 524, for substantially the fulllength of stroke of the piston 421 in either direction. But toward theend of the stroke, and after the lug has engaged one or the other of thevalve stems, the roller 535 will start riding down the inclined portion537 of the track 536, and will thereby start to move the lug 531laterally, and just as the piston is about to complete its stroke thelug 531 will have been moved laterally sufficiently to release the valvestem, so that the valve may be returned to its normal position by meansof its spring. The

inner ends of the valve cylinders 516 and 521 are provided with ports538 and 539 respectively, to prevent air from being trapped in thecylinders,.which would resist the movement of the valves 517 and 522 bytheir springs. In describing the operation of these valves, reference isto be had to Figures 3, 4 and 9, and it will be assumed that the piston421 isat the right hand end of its stroke and is just commencing itsopposite stroke. Under such conditions the valve 522 will be in itsnormal position, i. e., at the right hand end of the valve cylinder sothat the left hand end of.cylnder 418 will have a free exhaust. As thepiston 421 of cylinder 418 approaches the left hand end of its stroke,the lug 531 will engage the valve stem and start the movement of thevalve 522 to the left. The rst effect of this movement is that the valvewill partly close the passage 520 and as the valve continues its travelto the left the groove 526 will come into register with the passage 520and provide a restricted outlet for the exhaust air 4through thisgroove, passages 527, and thence through the interior of the valve tothe pipe 446. The continued travel of the valve to the left will movethe vgroove 526 out of alignment with the passage and thus shut off theexhaust from the left hand end 'of the cylinder 418; and just as thispiston has about finished its stroke the groove 525 will come intoalignment with the passage 520, so that the exhaust air will have arestricted outlet through circumferential groove 525, longitudinalgrooves 528, circumferential groove 526, and passages 527, to theinterior of the valve, and then to pipe 446. At the left of Figure 9,the valve 522 is shown as Just reaching this position. During thismovement of the valve to the left the roller 535 has engaged thedownturned track 537, so that the lug 531 has been moved laterally somedistance. but not sufllciently to escape from engagement with the valvestem 524. By an inspection of the left portion of Figure 9, it will benoted that the lug is almost in position to release the valve stem. Bythe time the piston 421 completes its stroke the lug will have beenmoved laterally a sumcient distance .to release the valve sternV 524.whereupon the spring 523 will move the valve 522 to its normal position,permitting free communication between the pipe 446 and the left hand endof cylinder 418; and the parts are now in position for air pressure tobe admitted to the left hand end of the cylinder to cause the piston totravel in the opposite direction. The valve 522 will remain in itsnormal position until the piston 421 has completed its right hand strokeand is again approaching the end of its left hand stroke.'

During the right hand strokeof the piston 421, the lug will cooperatewith the valve stem 519 in exactly the same manner as described above inconnection with the valve stem 524; and the valve 517 will function in,the same manner as valve 522, to provide the cushioning effect for thepiston.

. Each end of the cylinder 418 may be provided with a port 4l6', whichis connected with a short pipe section 418", in which there is a valve41.6"' controlling ommunication with the atmosphere. By the adjustmentof these bleeder valves 418'" I am able to regulate the rapidity ofmovement of the piston 42j., in either direction, and also to release anover accumulation of water and oil that would otherwise prevent the fulltravel of piston 421. The above described construction is illustrated inFigure 4,.

The preferred means for mounting and adjusting the cams 424, 425 and426, referred to hereinbefore, will now be described; reference beinghad particularly to Figures 2, 10, 10a, 11 and 13. Cam 424 is mounted ona disc 424a which is keyed to the main driving shaft 153 of therefinisher conveyer, Also keyed to this driving shaft is the sprocket541 which operates the revolving disc 540 upon which the ware isdeposited by the transfer mechanism. Cam 424 controls the closing of thegrippers, etc., and it is therefore essential that this cam function atthe instant the ware carrying cups are in position for the grippers tograsp the ware. Accordingly cam 424 remains axed factor with respect tothe fire-finisher conveyer. Any change in speed of operation of thefirefinisher conveyer, will produce a like change in the operation ofthe cam 424, and the jaws will always operate to grasp the ware at theproper instant. For this purpose of initially adjusting the cam 424 toproper position, the cam is secured to the disc 424a by means of thebolt and slot connection, indicated by numerals 427 and 428.

As described hereinbefore cam 424 controls the closing of the grippers,the elevation of the ware, and the transfer of the ware; but thetransfer mechanism must settle by gravity, when the pressure in thelower end of cylinder 410 is released. The grippers cannot be opened torelease the ware until the transfer mechanism has been lowered, and thetransfer mechanism cannot be moved back to pick-up position until thegrippers are opened. Any change in speed of operation of thefire-finisher conveyer, has no effect on the time required for thetransfer mechanism to settle by gravity. Accordingly itk is necessary toadvance or retard the cams 425 and 426, when the speed of thefire-flnisher'conveyer is changed. Cam 426 controls the opening of .thegrippers, and cam 425 controls the movement of the transfer mechanismback to pick-up position. The relation between cams 425 and 426 ispractically a fixed factor, and it is therefore desirable that means beprovided to simultaneously adjust cams 425 and 426, with respect to cam424. Cam 425 is mounted on a disc 4250i which is loosely mounted on theshaft 153; the cam being adjustable with respect to the disc by means ofbolt and slot connection 427, 428.

Cam 426 is mounted on a disc 426e which is loosely mounted on the shaft153; the cam 426 being adjustable with respect to disc 42612. by meansof bolt and slot connection 427, 428. discs 425a and 426e are formedinto a unitary structurer by means of. bolts 4265 which pass through thetwo discs and also through suitable spacing sleeves 426e arrangedbetween the two cam discs. Adjusting screws 426e are threaded throughthe boltheads 426d oi bolts 42622. The ends of these adjusting screws`426e bear against a yoke member 426i which is keyed to the drivingshaft 153. As the yoke member is keyed to the shaft 153, and as screws426e engage the yoke member, and as the discs 425e and 426e areconnected by bolts 426i), it is apparent that the discs, andconsequently the cams 425 and 426 mounted thereon, are driven by theshaft 153. It is also apparent that by advancing one of the adjustingscrews and withdrawing the other adjusting screw, the cams 425 and 426.will be adjusted as a unit.

The

As stated above the relation between cams 425 and 426 remains constant,,as Vthe function of these cams is to open the grippers and return thetransfer mechanism to the pick-up position. They are originally adjustedto the proper position and then clamped to their discs' by means ofbolts 428.. If the speed of operation of the fire-finisher should bechanged, cam 424 will continue to function properly, but cams 425 and426 will have to be slightly advanced or retarded, without changing therelation between them. To make such an adjustment it is only necessaryto slightly advance one of the adjusting screws 426e and slightlywithdraw the other adjusting screw, whereby the cams 425 and 426 will beslightly rotated about the shaft 153.

It is believed that the construction, function, and operation, of allthe parts of this transfer mechanism will be understood from theforegoing description, and I shall now describe, in a general way, acomplev e cycle of operation, in

order to give a better understanding of thc operative relation that thevarious parts bear to one another. For the ypurpose of this descriptionof the operation, it will be assumed that the grippers are in theirrearward open position out of the path of the ware in the cups 186; thatthe transfer mechanism is at the right ously carried forward in the cups186, and after.

the various operations have been performed on the articles, the cups areopened by mechanism not described herein, to release the articles to 1permit them to be removed. At the proper instant, as illustrateddiagrammatically in Figure 3, the cam 424 will trip the valve 432against the pressure of spring 432.v valve 432 will permit fluidpressure to flow from pipe 436 through pipe 442 to the lower end ofcylinder 410, and through pipe 475e *o cylinder 475. Cylinder 475 is ofconsiderably smaller diameter than cylinder 410, and consequentlycylinder 475 will function an instant earlier than cylinder 410. Theadmission of fluid pressure to cylinder' 475 causes the piston rod 475:2to be projected forward into engagement with the shuttle valve Astern472, thereby shifting the shuttle valve tothe position indi- Theltripping of cated in Figure 3. This-shifting of the shuttle valvepermits the live air in pipe 463 to flow through passage 478 and 479 tothe rear end of cylinder 450. The introductionA of fluid pressure at therear of cylinder 450 will cause piston 451 and piston rod 452 to moveforwardly to operate the grippers. As the piston rod moves forward thegripper elements 496, carried by the rigid arms 495, will be projectedbetween the two articles to be transferred; and at the same time thegrippers 502 carried by the oscillatable arms 499 will be swung intocooperative relation with the grippers 496, whereby the two articles aresimultaneously gripped preparatory to being transferred. During thisforward movement of the piston 451, the air in the forward end of thecylinder exhausts through passages 482 and 483 to the shuttle valve, andthence through passage 470, to the atmosphere; the passage 470 beingcontrolled by needle valve 471 to provide a cushioning effect for thepiston 451 on its forward stroke. I have previously described the mannerin which the grippers are adjusted for ware of different sizes, and themeans for adjusting the forward limit of movement of the grippers; suchmeans comprising the rod 459 which is attached to the piston 451,projects through the rear end of the cylinder 450, and has nuts 462threaded on its free end.

As stated above, air pressure is also admitted to the lower'end ofcylindei 410 by the tripping of the valve 432', and thus almostinstantaneous with the gripping of the ware the piston 411 will be movedupwardly, thereby bodily elevating the transfer mechanism, to lift theware clear of the cups 186 and cup fingers 189; the upper stroke of thepiston 41.1 of cylinder 410 being cushioned by means ofthe needle valve443.

Just as the piston 411 is about to complete its upward stroke ituncovers the port 444, to

left, to carry the ware from the pick-up position to the deliveryposition; the casting 420 being guided in its movement by the dovetailtrack 419. During this stroke of the piston 421, the left hand end ofcylinder 418 will be exhausting through passage 520, valve cylinder 521,pipe 446, valve 433', and thence through port 440 to atmosphere. Duringthis stroke of the piston 421, the air pressure beneath piston 411 hasmaintained the transfer mechanism in elevated position, but just as thepiston 421 is about to complete its stroke, the cam 424 will release thevalve 432 so that the spring 432" will move the valve upwardly, shuttingoff communication between the air line 436 and the bottom of cylinder410, and opening communication between the lower end of the cylinder andthe atmosphere, through port 439 of the valve casing 432.

through 180 by reason of the gear wheel 486 meshing with the rack 489,to thereby invert the ware in the manner hereinbefore described indetail. While the ware is being inverted pressure is maintained behindthe piston 451, to keep the grippers closed and in their forwardposition, by means of the groove 480 which extends almost half wayaround the outer wall of the cylinder 450. This groove terminates inadvance of the exhaust port 481; and'just as the cylinder 450 completesits half revolution, the exhaust port 481 will come into alignment withthe passage 478, so that the air behind the piston 451 will exhaust justas soon as the shuttle valve 469 is shifted.

During this stroke of the piston 421 the lug 531 will engage the valvestem 524 to operate the valve 522, in the manner described, to provide acushioning effect for the piston 421; the valve stem being released asthe piston completes its stroke, by reason of the lateral movement ofthe lug 531 caused by the roller 535 following the downwardly curvedtrack 537. Thus far the ware hasbeen gripped. elevated, transferred,inverted, and lowered; and it is only necessary to open the grippers torelease the ware. and return the transfer mechanism to pick-up position,to complete the cycle of operation. Just as the transfer mechanismsettles by gravity to its lowered position, cam 426 will trip valve434', thereby permitting fluid pressure to pass from pipe 438 to pipe476e and thence to the end of cylinder 476. The piston rod 476a willthus be shot forward into engagement with the shuttle valve stem 473,thereby shifting the shuttle valve 469 to position to permit the liveair from pipe 463 to pass through passage 483 and port 484 to theforward end of cylinder 450, and permit the air in the rear end of thecylinder 450 to exhaust through port 481 and passages 478 and 470, toatmosphere. The grippers will thus be opened to release the invertedware, which will be received upon any suitable support, which in thisparticular case is a rotating disc, to be described hereinafter. Theware has been released, and the grippers have been drawn back out of thepath of the oncoming ware. To hold the grippers open and in thisretracted position, the air pressure will be maintained in the forwardend of cylinder 450, by means of the groove 485 which extends almosthalf wayaround the outer wall of the cylinder.v The grippers having beenopened and retracted, cam 425 now trips valve 433 to open communicationbetween pipes 437 and 446, whereby air under pressure is admitted to theleft hand end of cylinder 418. This return stroke of the piston 421 willmove the casting 420 and the entire transfer mechanism back to thepick-up position; and during this return stroke the right hand end ofcylinder 418 will exhaust through passage 515, valve cylinder 516, pipe445, cylinder 410, and needle valve port 443 to the atmosphere. Thisreturn stroke of the piston 421 is cushioned by means ofthe lug 531engaging the stem 519 of the valve 517, in exactly the same manner asdescribed above in connection with cushioning the opposite stroke.During the return stroke, the cylinder 450 and the grippers are,ofcourse, rotated through 180 in the opposite direction. A completecycle of operation has been described, and the transfer mechanism isback at the starting point, in lowered position, and witl. the grippersretracted and open. The cam 424 will now trip the valve llO 432 to shiftthe shuttle valve and thereby start another cycle of operation. l

In the operation described above, the piston 411 and the transfermechanism supported thereby, are permitted to settle by gravity intoposition to release the ware. In Figure 3a I show a modied 'arrangement`by which the downward movement of the piston and transfer mechanism ispositively operated, thereby affording a quicker and morev accuratelytimed operation. For this purpose, I provide two pipes 442 and 442leading from valve casing 432. Pipe 442 supplies fluid pressure tocylinders v410, 475 and 418, as previously described. Pipe 442 leads tothe upper end of cylinder 410. In place of the valve 432 I substitutethe valve 432e provided with the branch passages 432i) and 432e whichcommunicate alternately with the pipes 442 and 442. A guidepin 432)prevents the rotation of the valve. The valve casing 432 is providedwith exhaust ports 43211', and 432e. The remaining structure illustratedin Figure 3a is identical with the disclosure of Figure 3. In theoperation of the modified form illustrated inI Figure 3a, the same 424will trip the valve 432m, thereby moving it downwardly to bring passage432e into alignment with pipe 442, whereupon the fluid pressure frompipe 436 will ow to the lower end of cylinder 410, and to the cylninders 475 and 418, just as described in connection with Figure 3.closed, and the transfer mechanism will be elevated and moved frompick-up position to delivery position. The transfer mechanism is nowready to be lowered into position to deliver the transferred ware. Inthe previously described form the transfer mechanism was allowed tosettle by gravity, but in the present form, when the cam 424 releasesvalve 4:32a, and the spring 432 moves it upwardly, the branch passage432i; will align with pipe 442', whereby fluid pressure will flow frompipe 436 through pipe 442 to the upper end of cylinder 410, so that thepiston 411, and the transfer mechanism carried thereby, will bepositively lowered. When the valve 432e is in its upper position, thelower end thereof is above the port to pipe 442, so that this pipe isfree to exhaust to atmosphere through ein haust port 432e; and when thevalve 432e is in its lower position, its upper end is below the port topipe 442', so that this pipe is free to exhaust to atmosphere throughexhaust port 4325i. With the exception of the positive lowering movementof the transfer mechanism, the entire operation of the transfermechanism re= mains exactly the same as described hereinbefore.

In the description of a complete cycle of operation of the transfermechanism, I have de-` scribed the mechanism as simultaneouslytransferring two articles; but it is obvious that without any change itmay be employed for trans ferr-ing one article at a time; and it is alsoobvil ous that by slight modifications it may be employed tosimultaneously transfer three or four articles.

Also in the foregoing description of a cycle of operation of thetransfer mechanism, I have included the step or" inverting the ware; butthis step may be omitted by merely withdrawing the bolt 487, andsetting' up on the screw 491. Also in the present mechanism, the step ofinverting he ware occurs during its travel from the piel;- up positionto delivery position, but it is apparent that means may be substitutedfor in- The grippers will thus bev verting the ware at Ythe pick-upposition, or lat the delivery position, instead of during the passagefrom pick-up to delivery position.

In the preferred form of the apparatus, as disclosed herein, thetransferred ware is deposited on a continuously rotating disc 540, and Ishall now describe the means for operating this disc, and the means forguiding the ware from the disc to a leer cross-conveyer, or otherconveyer; reference being had particularly to Figures 11, 12 and 13.Mounted onthe main drive shaft 153 is a sprocket wheel 541 which has adriving connection with a relatively small sprocket wheel 542, by meansof a sprocket chain 543. The small sprocket wheel 542 is fixed to ashaft 544, and fixed to the opposite end of this shaft is a bevel gear545. This bevel gear meshes with a bevel gear 546 which is mounted forrotation on a shaft 547. Also mounted for rotation on the shaft 547 is aplate 548, which is connected with `the bevel gear 546 to rotatetherewith, and

which carries the disc 540 on which the ware is deposited. The shaft 547has its lower end reduced in diameter to form a shoulder 549, and thereduced portion 550 extends downwardly through a frame member and has anut 551 threaded on its lower end, whereby the shaft is rigidly clampedto the frame member; such details of construction being illustrated inFigure 12.

By the means described above the disc 540 will be continuously rotatedin the direction indioated by the arrows in Figure 13; and in this sameFigure I have shown, in broken lines, the position two articles willoccupy at the moment they are deposited on the disc. For the purpose ofguiding the articles on the leer or other conveyer, I provide two guidemembers, indicated by numerals 552 and 553. The guide member 553 isprovided with a bracket 554 by which it is attached to the frame member,and guide member 552 is secured to the upper end of the stationary shaft547 by means of the bolt 555; both guide members being suitably curvedto direct the ware onto the continuously moving conveyer 1 556 which isdirectly adjacent the disc, so that the ware will pass from the disc tothe conveyer. Ey an inspection of Figure 13; it will be noted that thetwo articles, shown in broken lines, are so placed on` the disc that oneis near the center thereof, while the other is near the` peripherythereof. The outer article, by reason of its faster travel, will taire aposition in advance of the inner article, so that the articles will bein a single @le by the time they reach the conveyer; the approximaterelative position Ithe two articles will be caused to occupy by therotation of the disc, being illustrated in full lines in Figure 13. Ofcourse, the disc and guide members may be eliminated, by depositing theware directly on the leer cross-conveyor or other conveyer, and that maybe desirable in certain installations. But it will be understood that byemploying this disc, the complete machine, which extends from theforming machine to the leer, may be arranged at almost any desiredangular relation with respect to the leer or the forming machine, andthis feature is of very considerable practical importance.

Gbviously many changes and modifications may be made withoutdepartingfrom the spirit of the invention; and all such changes and modificationsare intended to be included within the scope of the appended claims.

What I claim is:

1. A transfer mechanism including mechanical grippers for simultaneouslygripping the sides of a plurality of glass articles arranged on oppositesides-of a center of rotation, means for inverting the articles aboutthe center of rotation, and means for shifting the center of rotationwhile the articles are being inverted.

`2. A transfer mechanism including means for gripping the sides of aplurality of articles arranged on opposite sides of a center ofrotation, means for vertically elevating the articles after they havebeen gripped, means for transferring the articles in a horizontal path,land means for inverting the articles about the center of-rotation"during their travel in the horizontal path.

3.' A transfer mechanism including a pair of g'rippers for grippingglassware to be transferred, a member carrying said grippers, a cylinderfor moving said member back and forth in a horizontal plane betweenreceiving and delivering position, a gear oscillating the grippersthrough substantially 180 as the member moves back and forth, and meansfor rendering said gear inoperative.

4. A conveyer for transporting glassware, a transfer mechanism includinggrippers arranged at one side of said conveyer, means for projecting thegrippers forwardly into the path of the glass articles on the conveyer,means for vertically elevating the grippers, means for moving thegrippers laterally in a horizontal path, means for rotating the grippersthrough substantially 180 during the lateral travel, means for loweringthe grippers, means for opening the grippers and withdrawing them fromthe path of the oncoming ware on the conveyer, and means for retin'ningthe grippers in a horizontal path to the original position.

, 5. A conveyer for transporting glassware, a transfer mechanismincluding grippers arranged at one side of said conveyer, means forprojecting the grippers forwardly into the path of the glass articles onthe conveyer, means for vertically elevating the grippers, means formoving the grippers laterally in a horizontal path, means for rotatingthe grippers through substantially 180 during the lateral travel, meansfor rendering inoperativesaid rotating means, means for lowering thegrippers, means for openingthe grippers and withdrawing them from thepath of the oncoming ware'on the conveyer, and means for returningthegrippers in a horizontal path to the original position.

6. A device for transferring glassware including two diametricallyopposed gripper elements, a rigid arm carrying one of said grippers, anarm oscillatable in an arc and carrying the other of said grippers, andmeans for adjusting the oseillatable arm only forkdiiferent sizes ofware without disturbing the diametrically opposed relation of thegripper elements.

.7. A device for transferring glassware including apair of gripperelements, an oscillatable arm, said arm having angularly disposed slots,a member mounted on said arm guided by said slots, means for adjustingsaid member with re- Y spect to said arm, and one of Vsaid gripper-scaron' said oscillatable arm and guided'/ by said slots, means foradjusting said member with respect to said oscillatable arm, and theother of said gripper elements carried by said member.

9. A device for transferring glassware including a horizontal shaft,pairs of gripper elements disposed on opposite sides of said shaft, andmeans for oscillating the shaft through 180.

10. A device for transfer:ing glassware including pairs of gripperelements, ahorizontal shaft carrying 'said pairs of gripper elements,the pairs of gripper elements disposed on opposite sides of the shaft,means for moving said shaft back and forth, and means for oscillatingsaid shaft.

11. A device for transferring glassware including' pairs of gripperelements, a horizontal shaft carrying said pairs of gripper elements,the pairs of gripper elements disposed onopposite sides of the shaft,means for moving said shaft back and forth, and means for oscillatingsaid shaft during its translation.

12`. A device Ifor transferring glassware including pairs of gripperelements, a horizontal shaft carrying said pairs of gripper elements,the pairs of gripper elements disposed on opposite sides of the shaft,means for moving said shaft baci:` and forth, means for oscillating saidshaft, and means for rendering inoperative the said oscillating means. i

13. A device for transferring glassware including a shaft, pairs ofgrippers arranged on opposite sides of said shaftfmeans for elevatingthe shaft, and means for moving the shaft back and forth in arectilinear path between pick-up and delivery position.

14. A device for transferring glassware including pairs of gripperelements, a shaft carrying said pairs of gripper elements, the pairs ofgrippers disposed on opposite sides of the shaft. a gear adapted to beoperatively connected with said shaft, a rack associated with said gear,and means for moving said shaft back and forth in a rectilinear pathbetween pick-up and delivery position.

15. Aldevice for transferring glassware including a piston rod, grippersoperatively associated with the piston rod, a cylinder for reciprocatingthe piston rod, means for bodily lifting the cylinder and piston rod,and means for moving the cylinder back and forth between pick-up and'delivery position, and mea-ns for rotating the piston rod about itsaxis.

16. A device for transferring glassware including a piston rod, grippersoperatively associated with the piston rod, a cylinder for reciprocatingthe piston rod, means vfor bodily lifting the cylinder, means for movingthe cylinder back and forth between pick-up and delivery position, andmeans for rotating the cylinder.

V17. A device for transferring glassware including a piston rod,grippers operatively associated with the piston rod, a cylinder forreciprocating the piston rod, means for moving the cylinder back andforth between pick-up and delivery position, and means for rotating thecylinder about its axis.

i8. A device for transferring glassware including horizontally disposedgrippers a horizontal cylinder for operating the gripper-s, and meansfor rotating the cylinder about its longitudinal axis. j l,

19. A device for transferring glassware including two pairs of grippers.a cylinder for operating both pairs of grippers, means for rotat-

